<template>
  <div class="app-container">
    <div class="filter-container">
       <el-input v-model="listQuery.title" placeholder="请输入知识库标题" style="width: 200px;" class="filter-item" @keyup.enter.native="handleFilter" />
      <el-select v-model="listQuery.genre" placeholder="全部分类" clearable style="width: 120px" class="filter-item">
        <el-option v-for="item in genreoption" :key="item" :label="item" :value="item" />
      </el-select>
      <el-button v-waves class="filter-item" type="primary" icon="el-icon-search" @click="handleFilter">
          搜索
      </el-button>
      <el-button class="filter-item" style="margin-left: 10px;" type="primary" icon="el-icon-edit" @click="handleCreate">
       添加
      </el-button>
     <el-button class="filter-item" type="primary" icon="el-icon-delete" @click.prevent="delData()">
        删除
      </el-button>
    </div>

    <el-table
      :key="tableKey"
      v-loading="listLoading"
      :data="list"
      border
      fit
      highlight-current-row
      style="width: 100%;"
      @selection-change="selectRow"
    >
    <el-table-column type="selection" width="77">
            </el-table-column>
       <el-table-column label="序号" align="center" width="80" >
        <template slot-scope="{row}">
          <span>{{ row.num }}</span>
        </template>
      </el-table-column>
      <el-table-column label="标题" width="100px" align="center">
        <template slot-scope="{row}">
          <span>{{ row.title }}</span>
        </template>
      </el-table-column>
      <el-table-column label="知识库简介" width="100px" align="center">
        <template slot-scope="{row}">
          <span>{{ row.body }}</span>
        </template>
      </el-table-column>
      <el-table-column label="所属分类" min-width="90px">
        <template slot-scope="{row}">
          <span>{{ row.genre }}</span>
        </template>
      </el-table-column>
      <el-table-column label="发布时间" min-width="90px">
        <template slot-scope="{row}">
          <span>{{ row.time }}</span>
        </template>
      </el-table-column>
      <el-table-column label="发布人" min-width="90px">
        <template slot-scope="{row}">
          <span>{{ row.person }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" width="230" class-name="small-padding fixed-width">
        <template slot-scope="{row,$index}">
          <el-button type="primary" size="mini" @click="handleUpdate(row)">
            修改
          </el-button>
          <el-button v-if="row.status!='deleted'" size="mini" type="danger" @click="handleDelete(row,$index)">
            删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination v-show="total>0" :total="total" :page.sync="listQuery.page" :limit.sync="listQuery.limit" @pagination="getList" />

    <el-dialog :title="textMap[dialogStatus]" :visible.sync="dialogFormVisible">
      <el-form ref="dataForm" :rules="rules" :model="temp" label-position="left" label-width="70px" style="width: 400px; margin-left:50px;">
       <el-form-item label="序号" prop="num">
          <el-input v-model="temp.num" />
        </el-form-item>
        <el-form-item label="知识库标题" prop="title">
          <el-input v-model="temp.title"  placeholder="请输入知识库标题" />
        </el-form-item>
        <el-form-item label="知识库简介" prop="body">
          <el-input v-model="temp.body"  placeholder="不超过300字" />
        </el-form-item>
        <el-form-item label="选择分类" prop="genre">
           <el-select v-model="temp.genre" placeholder="请选择" clearable style="width: 120px" class="filter-item">
        <el-option v-for="item in genreoption" :key="item" :label="item" :value="item" />
      </el-select>
        </el-form-item>
        <el-form-item label="发布时间" prop="time">
          <el-input v-model="temp.time"  placeholder="请选择时间" />
        </el-form-item>
        <el-form-item label="发布人" prop="person">
          <el-input v-model="temp.person"  placeholder="填写发布人" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">
          取消
        </el-button>
        <el-button type="primary" @click="dialogStatus==='create'?createData():updateData()">
         保存
        </el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { fetchList, fetchPv, createArticle, updateArticle } from '@/api/article'
import waves from '@/directive/waves' // waves directive
import { parseTime } from '@/utils'
import Pagination from '@/components/Pagination' // secondary package based on el-pagination

export default {
  name: 'ComplexTable',
  components: { Pagination },
  directives: { waves },
  data() {
    return {
      tableKey: 0,
      list: null,
      total: 0,
      listLoading: true,
      listQuery: {
        page: 1,
        limit: 20,
        title: undefined,
      },
       genreoption:["种植技术","病虫害防治","加布工艺","市场推广","印象三田","智慧农业设备"],
      temp: {
        num:'',
        title:'',
        body:'',
        genre:'',
        time:'',
        person:'',
        name:'',
      },
      dialogFormVisible: false,
      dialogStatus: '',
      textMap: {
        update: 'Edit',
        create: 'Create'
      },
      dialogPvVisible: false,
      pvData: [],
      rules: {
        title: [{ required: true, message: 'title is required', trigger: 'blur' }],
        body: [{ required: true, message: 'body is required', trigger: 'blur' }],
        genre: [{ required: true, message: 'genre is required', trigger: 'blur' }],
      },
      downloadLoading: false
    }
  },
  created() {
    this.getList()
  },
  methods: {
    sortChange(data) {
      const { prop, order } = data
      if (prop === 'id') {
        this.sortByID(order)
      }
    },
    sortByID(order) {
      if (order === 'ascending') {
        this.listQuery.sort = '+id'
      } else {
        this.listQuery.sort = '-id'
      }
      this.handleFilter()
    },
     selectRow (val) {
        this.selectlistRow = val
      },
    //批量删除
    delData() {
      for (let i = 0; i < this.selectlistRow.length; i++) {
          let val = this.selectlistRow
          val.forEach((val, index) => {
            this.list.forEach((v, i) => {
              if (val.id === v.id) {
                this.list.splice(i, 1)
              }
            })
          })
        }
        this.$notify({
        title: 'Success',
        message: '删除成功',
        type: 'success',
        duration: 2000
      })
    },
    getList() {
      this.listLoading = true
    fetchList(this.listQuery).then(response => {
        this.list = response.data.items
        this.total = response.data.total

        // Just to simulate the time of the request
        setTimeout(() => {
          this.listLoading = false
        }, 1.5 * 1000)
      })
    },
    handleFilter() {
      this.listQuery.page = 1
      this.getList()
      
    },
    
    handleModifyStatus(row, status) {
      this.$message({
        message: '操作Success',
        type: 'success'
      })
      row.status = status
    },
    resetTemp() {
      this.temp = {
        num:'',
        title:'',
        body:'',
        genre:'',
        time:'',
        person:'',
      }
    },
    handleCreate() {
      this.resetTemp()
      this.dialogStatus = 'create'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    createData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          this.temp.id = parseInt(Math.random() * 100) + 1024 // mock a id
          this.temp.author = 'vue-element-admin'
          createArticle(this.temp).then(() => {
            this.list.unshift(this.temp)
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: 'Created Successfully',
              type: 'success',
              duration: 2000
            })
          })
        }
      })
    },
    handleUpdate(row) {
      this.temp = Object.assign({}, row) // copy obj
      this.temp.timestamp = new Date(this.temp.timestamp)
      this.dialogStatus = 'update'
      this.dialogFormVisible = true
      this.$nextTick(() => {
        this.$refs['dataForm'].clearValidate()
      })
    },
    updateData() {
      this.$refs['dataForm'].validate((valid) => {
        if (valid) {
          const tempData = Object.assign({}, this.temp)
          tempData.timestamp = +new Date(tempData.timestamp) // change Thu Nov 30 2017 16:41:05 GMT+0800 (CST) to 1512031311464
          updateArticle(tempData).then(() => {
            const index = this.list.findIndex(v => v.id === this.temp.id)
            this.list.splice(index, 1, this.temp)
            this.dialogFormVisible = false
            this.$notify({
              title: 'Success',
              message: 'Update Successfully',
              type: 'success',
              duration: 2000
            })
          })
        }
      })
    },
    handleDelete(row, index) {
      this.$notify({
        title: 'Success',
        message: 'Delete Successfully',
        type: 'success',
        duration: 2000
      })
      this.list.splice(index, 1)
    },
    handleFetchPv(pv) {
      fetchPv(pv).then(response => {
        this.pvData = response.data.pvData
        this.dialogPvVisible = true
      })
    },
  }
}
</script>
